package com.brainardphotography.blog.auth;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;

public class AuthFilter implements Filter {

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		// TODO Auto-generated method stub
		UserService users = UserServiceFactory.getUserService();
		
		HttpServletRequest htRequest = (HttpServletRequest) request;
		
		if(users.isUserLoggedIn()) {
			User user = users.getCurrentUser();
			
			request.setAttribute("user", new BlogUser(user));
			request.setAttribute("logoutURL", users.createLogoutURL(htRequest.getRequestURI()));
		} else {
			request.setAttribute("loginURL", users.createLoginURL(htRequest.getRequestURI()));
		}

		chain.doFilter(request, response);
	}

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

}
